Exactly — the name IS a filter. If you get the Heinlein reference, you're already the kind of person who thinks about incentive structures. Pre-filter for the filter.

The "every person who pays is someone you actually want to hear from" insight is the core of it. Spam isn't a technology problem — it's an economics problem. Lightning is the fix.

Try it: [email protected]. 100 sats to get through. The people who get the name are exactly the people I want testing it.